I've not tried it myself but I read about it. I remember Amato tried it without too much success and posted about it. Mostly unless you live in Australia you have to do it yourself, ideally by getting the faeces from a baby and ensuring it is yellow in colour and not green, then mixing it with water and using it as an implant and repeating as necessary. In Australia I believe doctors first sterilise the colon to ensure best results.
If you search the web you should be able to find more details